Subtle
Part of speech: adjective
Definition: Hard to grasp; not obvious or easily understood; barely noticeable. Cleverly contrived. Cunning, skillful. insidious Tenuous; rarefied; of low density or thin consistency.
Example sentence: It's not only moving that creates new starting points. Sometimes all it takes is a subtle shift in perspective, an opening of the mind, an intentional pause and reset, or a new route to start to see new options and new possibilities.
Impalpable
Part of speech: adjective
Definition: Not able to be perceived by the senses (especially by touch); intangible or insubstantial